They haven't.
This is what he was told :
Dammy's imagination did the rest.
That sounds like a reality check for Dammy.
Take 20,000 units and multiply it by the cost of the unit and that is waaaaaaaaaaaaaaaaay short of $10m. Once you take into account that the sales price isn't the profit, and you factor in the advertising budget, company expenses, etc, I doubt 20,000 units even cover the cost of the Disney DVD deal.
However, it is a start.
I still don't see that big a market for expensive retro PCs, but who knows.